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Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signal
From: |
Ian Jackson |
Subject: |
Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals. |
Date: |
Tue, 26 Aug 2008 16:23:22 +0100 |
Avi Kivity writes ("Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle
terminating signals."):
> Not sure that it matters, but the semantics are slightly different:
> with a thread you don't get EINTR in random syscalls as the signal
> thread is the only one that has the signals unblocked.
That's true but I don't think it's really relevant because we already
have other signal handlers (and we might grow further ones) so the
rest of the code has to be robust against those.
My experience suggests very strongly that we should avoid doing
multithreaded things if at all possible. Threads are less portable;
even when they are provided many of the implementations are buggy
(although less so nowadays).
There is also the way that once you have a multithreaded program, it
is much more difficult to discourage the expansion of the concurrent
functionality until the whole program is a mass of race bugs. I would
rather not open this stable door.
Ian.
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., (continued)
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Jamie Lokier, 2008/08/26
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Jamie Lokier, 2008/08/26
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Anthony Liguori, 2008/08/26
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Ian Jackson, 2008/08/27
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Jamie Lokier, 2008/08/27
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Ian Jackson, 2008/08/27
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Anthony Liguori, 2008/08/27
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Jamie Lokier, 2008/08/27
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Ian Jackson, 2008/08/28
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Anthony Liguori, 2008/08/26
- Message not available
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals.,
Ian Jackson <=
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Avi Kivity, 2008/08/26
- Message not available
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Ian Jackson, 2008/08/26
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Avi Kivity, 2008/08/26
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Julian Seward, 2008/08/26
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Anthony Liguori, 2008/08/26
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Avi Kivity, 2008/08/27
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Alan Cox, 2008/08/27
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Avi Kivity, 2008/08/27
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Keir Fraser, 2008/08/27
- Re: [Xen-devel] Re: [Qemu-devel] [PATCH 01/13] Handle terminating signals., Gleb Natapov, 2008/08/27